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Finding the Third Proportional to 13,601 and 20,805

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Solution

The third proportional to 13,601 and 20,805 is: 31,824.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,601 : 20,805 = 20,805 : x
  2. Step 2: Convert to fraction form
    13,601/20,805 = 20,805/x
  3. Step 3: Cross multiply
    13,601x = 20,805 × 20,805
  4. Step 4: Simplify right side
    13,601x = 432,848,025
  5. Step 5: Solve for x
    x = 432,848,025/13,601
  6. Step 6: Final answer
    x = 31,824.72

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.